Finding the Fourth Proportional to 1,661.24, 2,496.72 and 1,540.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,661.24 : 2,496.72 = 1,540.56 : x
2. Step 2: Convert to fraction form
   1,661.24/2,496.72 = 1,540.56/x
3. Step 3: Cross multiply
   1,661.24x = 2,496.72 × 1,540.56
4. Step 4: Simplify right side
   1,661.24x = 3,846,346.96
5. Step 5: Solve for x
   x = 3,846,346.96/1,661.24
6. Step 6: Final answer
   x = 2,315.35